LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – ZOOLOGY
SECOND SEMESTER – APRIL 2011
ZO 2815 / 2809 – BIOPHYSICS
Date : 05-04-2011 Dept. No. Max. : 100 Marks
Time : 1:00 – 4:00
Part –A
Answer ALL the questions (10×2=20 Marks)
- Define Gibb’s free energy.
- Comment on Fick’s law.
- Differentiate entropy from enthalpy.
- List down any two applications of laser.
- What is Plasmolysis?
- Explain Turgor pressure.
- Define Viscosity.
- What is Refractive index?
- Write down the principle of Thin Layer Chromatography.
- Explain Donnan’s equilibrium.
Part –B
Answer any FOUR questions (4×10= 40 Marks)
- Give an account of Geiger Muller counter.
- Describe the surface tension by drop weight method.
- What are the factors affecting enzyme action.
- Give a detailed account on nuclear magnetic resonance.
- Write the principle, procedure and applications of ascending paper chromatography.
- Discuss X-ray diffraction and discuss their application.
Part –C
Answer any TWO questions (2×20=40 Marks)
- Write an essay on the evolution of electrophoresis.
- Elaborate the influence of biophysics in photosynthesis.
- Give a detailed account of Photoelectric effect.
- What are lasers? Explain the ruby laser and enumerate its applications.